Sökning: "enzymatic activity"

Visar resultat 26 - 30 av 335 avhandlingar innehållade orden enzymatic activity.

  1. 26. Biocatalysis in Organic Media: Parameters Influencing Activity, Stability and Enantioselectivity

    Författare :David Costes; Bioteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Kemiteknik och kemisk teknologi; Chemical technology and engineering; Biotechnology; Bioteknik; Proteins; enzymology; Proteiner; enzymologi;

    Sammanfattning : Biocatalysis in organic media offers very attractive methods to prepare fine chemicals. The biocatalyst performance regarding activity, stability and enantioselectivity will determine the viability of the bio-process. LÄS MER

  3. 27. Studies of myc gene expression and a novel endoribonuclease activity

    Författare :Anders Wennborg; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :c-myc; B-myc; heat-shock; mRNA degradation; endoribonucleases; AUUUAmotifs; RNase E.;

    Sammanfattning : The general aim of this work was to study the regulation of cellular oncogene expression, with emphasis on the c-myc gene, which is de-regulated in several human and animal tumors. The steady-state expression level of c-myc mRNA or protein was analyzed in panels of human Blymphoid cell lines with different growth and transformation properties, and the general observation was a co-variation between high c-myc expression and a more malignant phenotype of the cell lines. LÄS MER

  4. 28. Exploring beta-mannan acting glycosidase families in hydrolysis and mannosyl transfer

    Författare :Simon Birgersson; Biokemi och Strukturbiologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; glycoside hydrolases; beta-mannanase; Transglycosylation; enzymatic synthesis; Enzyme synergy; enzyme engineering; MALDI-TOF; HPLC; NMR;

    Sammanfattning : The thesis revolves around the study of glycoside hydrolases (GH), specifically GH5 β-mannanases and GH36 α-galactosidase (I-III), as well as a GH130 mannoside phosphorylase (I, IV). These enzymes are investigated for their actions on and conversion of hemicellulosic β-mannan, including food-grade galactomannan and softwood galactoglucomannan, along with manno-oligosaccharides (MOS) derived from such polymers. LÄS MER

  5. 29. Valorisation of cereal by-products: a biorefinery approach

    Författare :Reskandi C. Rudjito; Franscisco Vilaplana; Amparo Jimenez-Quero; Mirjam Kabel; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cereal by-products; arabinoxylan; ferulic acid; subcritical water extraction; enzymatic treatment; xylanases; prebiotics; Jordbruksbiprodukter; arabinoxylan; ferulsyra; subkritisk vattenextraktion; enzymatisk behandling; xylanaser; prebiotika; Bioteknologi; Biotechnology;

    Sammanfattning : Cereal by-products are abundant streams of underutilised biomass that have the potential be valorised into various industrial products by means of environmentally friendly processes. In this study, an integrated bioprocess combining subcritical water extraction (SWE) and enzymatic treatment (ET) was proposed to effectively extract arabinoxylans (AX) from cereal by-products. LÄS MER

  7. 30. Discovery and investigation of glycoside hydrolase family 5 enzymes with potential use in biomass conversion

    Författare :Yang Wang; Henrik Aspeborg; Ines Ezcurra; Jerry Ståhlberg; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; plant cell wall; biomass; hemicellulose; mannans; glycoside hydrolase; subfamily classification; Arabidopsis; mannanase; transglycosylase; enzymatic characterization.; Bioteknologi; Biotechnology;

    Sammanfattning : Glycoside hydrolases (GHs) cleave glycosidic bonds in glycoconjugates, oligosaccharides and polysaccharides such as cellulose and various hemicelluloses. Mannan is a major group of hemicelluloses. LÄS MER